RATIONALE AND OBJECTIVES: To create a robust, functional computer-assisted instruction (CAI)-videodisc program and to demonstrate its educational efficacy. METHODS: After creating a CAI-videodisc program in skeletal radiology for a two-screen Macintosh system, 36 medical students and 162 radiology residents entered a controlled study with paired pre- and posttests. Subjects also compared CAI-videodisc with other educational media. RESULTS: Medical students using the CAI-videodisc improved their mean pre- and posttests. Subjects also compared CAI-videodisc with other educational media. RESULTS: Medical students using the CAI-videodisc improved their mean pre- and posttest scores from 50.9 to 70.9 (P < .001, control group scores 50.1 and 50.6) and residents (using a different test) improved from 45.4 to 70.9 (P < .001, control group scores 49.6 and 46.1). Medical students and residents favored CAI-videodisc over teaching files, textbooks, videotapes, and slide-audiotapes. CONCLUSIONS: A functional CAI-videodisc program was created and demonstrated to be educationally effective.

Bone and Bones↗

PubMed1993

New high-resolution teleradiology system: prospective study of diagnostic accuracy in 685 transmitted clinical cases.

To compare the accuracy of interpretation of digitized radiographs with that of plain films, the authors prospectively evaluated the first 685 plain film cases (530 adult and 155 pediatric cases, each of which consisted of one or more images) transmitted from an outpatient center 18 miles (approximately 29 km) to a hospital radiology department by means of a high-speed teleradiology system. Plain films were digitized and transmitted via a T-1 (1.544 Mbit/sec) data link for display on high-resolution (2,560 x 2,048-pixel) workstations. Radiologists at the hospital used a copy of the radiology requisition that had been faxed from the remote center. Interpretation of the digital images was followed by review of the original plain radiographs within 1 working day. Discrepant interpretations occurred in 18 cases (2.6%) (sensitivity, 96%; specificity, 99%); an arbitration panel decided that they were associated with observer performance more than with the fidelity of the digital display. It is concluded that primary diagnosis without review of the original plain radiographs is feasible with state-of-the-art teleradiology systems.

Prospective Studies↗

PubMed1993

Transitional cell carcinoma.

Explore the source record for details and available documents.

Carcinoma, Transitional Cell↗

PubMed1993

Primary ileocecal tuberculosis.

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Adolescent↗

PubMed1993

Meniscal tears of the knee: preliminary comparison of three-dimensional MR reconstruction with two-dimensional MR imaging and arthroscopy.

OBJECTIVE: A pilot study was performed to evaluate the usefulness of three-dimensional (3D) MR reconstructions in detecting meniscal tears. MATERIALS AND METHODS: Reconstructions of 24 knee menisci were made by using data from standard two-dimensional (2D) MR images. The results were compared with findings on 2D MR images and at arthroscopy. RESULTS: All 17 arthroscopically proved meniscal tears were shown on the 3D reconstructions. Seven tears in five patients were shown on 3D reconstruction but not on 2D MR images, even on retrospective examination. Three of the seven were radial tears and four were horizontal tears. The seven missed tears were all located in the posterior horns. CONCLUSION: Three-dimensional reconstructions are accurate for determining meniscal abnormalities and may be better than 2D imaging for evaluating the posterior horns of the menisci. Three-dimensional reconstructions may be indicated when 2D MR imaging shows no abnormality in patients in whom clinical findings strongly suggest a meniscal tear.

Arthroscopy↗

PubMed1993